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MYSQL_UPGRADE(1)                            MySQL Database System                           MYSQL_UPGRADE(1)



NAME
       mysql_upgrade - check tables for MySQL upgrade

SYNOPSIS
       mysql_upgrade [options]

DESCRIPTION
       mysql_upgrade should be executed each time you upgrade MySQL. It checks all tables in all databases
       for incompatibilities with the current version of MySQL Server. If a table is found to have a
       possible incompatibility, it is checked. If any problems are found, the table is repaired.
       mysql_upgrade also upgrades the system tables so that you can take advantage of new privileges or
       capabilities that might have been added.

       All checked and repaired tables are marked with the current MySQL version number. This ensures that
       next time you run mysql_upgrade with the same version of the server, it can tell whether there is any
       need to check or repair the table again.

       mysql_upgrade also saves the MySQL version number in a file named mysql_upgrade.info in the data
       directory. This is used to quickly check if all tables have been checked for this release so that
       table-checking can be skipped. To ignore this file, use the --force option.

       To check and repair tables and to upgrade the system tables, mysql_upgrade executes the following
       commands:

          mysqlcheck --check-upgrade --all-databases --auto-repair
          mysql_fix_privilege_tables

       mysql_upgrade supersedes the older mysql_fix_privilege_tables script. In MySQL 5.0.19, mysql_upgrade
       was added as a shell script and worked only for Unix systems. As of MySQL 5.0.25, mysql_upgrade is an
       executable binary and is available on all systems. On systems older than those supporting
       mysql_upgrade, you can execute the mysqlcheck command manually, and then upgrade your system tables
       as described in mysql_fix_privilege_tables(1).

       For details about what is checked, see the description of the FOR UPGRADE option of the CHECK TABLE
       statement (see Section 5.2.3, "CHECK TABLE Syntax").

       To use mysql_upgrade, make sure that the server is running, and then invoke it like this:

          shell> mysql_upgrade [options]

       mysql_upgrade reads options from the command line and from the [mysql_upgrade] group in option files.
       It supports the following options:

         --help

          Display a short help message and exit.

         --basedir=path

          The path to the MySQL installation directory.

         --datadir=path

          The path to the data directory.

         --force

          Force execution of mysqlcheck even if mysql_upgrade has already been executed for the current
          version of MySQL. (In other words, this option causes the mysql_upgrade.info file to be ignored.)

         --user=user_name, -u user_name

          The MySQL username to use when connecting to the server. The default username is root.

         --verbose

          Verbose mode. Print more information about what the program does.


       Other options are passed to mysqlcheck and to mysql_fix_privilege_tables. For example, it might be
       necessary to specify the --password[=password] option.

COPYRIGHT
       Copyright 1997-2007 MySQL AB

       This documentation is NOT distributed under a GPL license. Use of this documentation is subject to
       the following terms: You may create a printed copy of this documentation solely for your own personal
       use. Conversion to other formats is allowed as long as the actual content is not altered or edited in
       any way. You shall not publish or distribute this documentation in any form or on any media, except
       if you distribute the documentation in a manner similar to how MySQL disseminates it (that is,
       electronically for download on a Web site with the software) or on a CD-ROM or similar medium,
       provided however that the documentation is disseminated together with the software on the same
       medium. Any other use, such as any dissemination of printed copies or use of this documentation, in
       whole or in part, in another publication, requires the prior written consent from an authorized
       representative of MySQL AB. MySQL AB reserves any and all rights to this documentation not expressly
       granted above.

       Please email <docs@mysql.com> for more information.

SEE ALSO
       For more information, please refer to the MySQL Reference Manual, which may already be installed
       locally and which is also available online at http://dev.mysql.com/doc/

AUTHOR
       MySQL AB (http://www.mysql.com/)  This software comes with no warranty.



MySQL 5.0                                        07/04/2007                                 MYSQL_UPGRADE(1)